Improvement in stone-cutting machines



apunta-gisten @atmdlllim HUGH YOUNG, OE MIDDLETOWN, CONNECTICUT, AND JAMES L. YOUNG, OE

NEW YORK, Y.,

Letters Patent No. 99,513, dated Februar/y 1, 187

IMPROVEMENT IN STONE-CUTTING- MACHINES.

vThe Schedule referred'to in these Letters Patent and making part of the same To all whom 'itmay concern Be it known that we, HUGH YOUNG, of Middletown, in the county ofMiddlesex, State of Connecticut, and-J AMES L. YOUNG, of New York city, in the county of New York, and State of New York, have invented certain new and useful I mpioveuients in Stone-Cutting Machinery; and wedo hereby declare that the following is a full and exact description thereof, reference beinghadfto the accompanying drawi ugs, and to thc letters of reference niarkedthereon. I

This invention relates to a machine for cutting stone by lmeans of a circular saw or milling-tool, protected by minera-l carbon, or other hard stones, or bypoints of chrome-steel, or other hard steels; and

Itconsists in thearraugement and combination of the diii'erent parts ofthe'machine with each other, and with said saw or milling-tool, wherebya novel, efficient, and useful `tool is obtained.

Plate I represents a sectional elevation of our improved stone-cuttin g machine, through its longitudinal centre, and i Plate II' represents aplan or birds-eye view of the same.

A is a strong metallic base-frame, builtmuch in the same manner as the frame of a metal-planer; being composed of two pieces A A, with top edges a u, V- shaped, to act as a slide-way, and cross-pieces AA A A', to form the frame.

1S B are two upright' frames, bolted or otherwise fastened to the frame A, and supporting the triangular frames C 0, which, being fastened in a permanent manner to the top part ofthe frames B, and stayed by the piece C', are held in a perfectly innnovable position.

lliefront edges or vertical edges of the piece GG- Saro shaped so as to form proper guides or slides b b, to

receive and guide, in a trlvlevertical plane, a framerpiece, D, which, by means of suitable screws and gears d d, is made to rise and fall at pleasure in said vertical plane, having always its lower edgeparallel to the bed of the machine.

The screwsand gears d d may be worked by means of the chain S and hand-crank V, or by any other suitable devices, sopas Ato be controlled by the operator of the machine.L

Whenever the frame-piece D is brought to the prpe'r height for thes'pecial work `in View, it is made fast to `tialaud permanent manner. v

I I are large pulleys, mounted upon the two ends of ,in the shop.

the frames C G, by suitable screws, screw-bolts, or hooks o o o, orby any other device, which will answer the pulrpose of making the frame-piece D fast and'stationary against the vertical edges of the frames C C.' The lower part of the frame-piece D Vis-provided with four projections g g q g,'to the under part of which are fastened pillow-blocks, of `suitable construction to receivefthe shaft e, upon which is mounted the circular saw or milling-,tool X. These pillow-blocks are made adj ustahle in their position under the 'projections g, by means of slotted bolt-holes, set-screws, or wedges, or by proper fillers, so that at any time'theshaft e can be brought again in mathematically true right angle to the plane of motion of the table E and F upon `the slidesA o a of the frame A. This' regulatingof the position .of thel'shaft e is of great import-ance, to obtain a motion of the saw which will produce a true and neat cut,'free from side and back scratches. l y

The shaft c is of a larger diameter in the Vmiddle part than at both ends, to insure greater rigidity and steady motion, with the smallest amount of friction, and the saw or milling-tool X is fastened at or about at the middle of the shaft,V to which the motion is given by two pulleys J J, one at each end of the said shaft e.

X is the circular saw or milling-tool, protected by mineral carbon or otherA hard stones, or by points of chrome-steel, or other hard steels,which maybe made of any approved construction or pattern, and must be l fastened to the iddle part of the shaft e, ina substan-` tlle shaft l', and corresponding to the two pulleys'J J,

with which they are connected by suitable belts J J. f

Yis the pulley,'upon which the belt for giving'rnotion to the circular saw is to be run, and, when desired, there may be a fast and a loose pulley iuthat place, to render" the machine independent in its action from Other'tools Y is a oountershaft, upon which the pulley Y is mounted, and which bears also the cone Rl, formed of a` series of vpulleys of suitable size.

R. is a cone, corresponding to and put in communicai tion with the cone R, so that thearrangement of the pulley Y, cones R It', pulleys I I, and pulleys J J, are

contrived and combined' to obtain, witha given speed of the pulley Y, any speeddesired for the special work for which the circular saw or milling-tool X may bens'ed.

E is a table or bed, supported upon slide-pieces e' e e e', which fit upon the V-shaped4 slideway of the pieces A, and may be. run ina true horizontal plane of motion uponvthe same.v

E is a second table or bed, resting'upon slides f f j',- which are fastened to thetableE, at right angle with its line of motion, in such a manner as to obtain for the table F a horizontal sliding motion crosswise upon the table E.

M M are screws, for moving the table F upon the slides f f f, and for retaining it stationary thereon, when required. These screws may be connected by gearings, so as to have them work in a simultaneous manner, and obtain abetter motion of the table F.

H is along screw, located between the two pieces A of the main frame, and mounted in suitable journals, fastened to the cross-pieces A of the said frame. rlhis screw H passes through a nut, G, which is made fastto ,the table E, and when the screw H is turned with the sun,77 it will* move the nut G and table E in the direction ofthe arrow of plate I, (which we call forward motion,)

` and when the screw H is turned against the sun, it

will move the. table E backward, or in the direction of the arrow in Plate 1I.

-The screw Il receives its motion from,the 'mitre-gears T 1 and t-he shaft Z, which, in turn, yreceives its motion in one or the other direction from the cone R, or from the pulley Nr v The shafts oand of are mounted'end to end ou aline,

`in suitablel bearings, to render them independent from each other, and they have a commonset of fast and shaft o side, aud for running back the table E, the pulleys N and N are employed on the shaft o" side.

Bythis'arrangement, the feed-motion, being adj usted by shifting the belt upon the set of cones RR, the mere shifting the belt upon the pulleys V, V, or V, will either feed the stone S forward to the saw X, stop said feed, or run the stone back.

We attach great importance to this minute regulation ofthe feed, or forward motion of the table E, and to the use therefor of a combination of belts and screw, as the constant, yet not positive feed obtained thereby, always keeps thework to the saw, not allowingr any'chance for clogging, or for breaking the carbon cutters, as is the ease in an intermittent and positive feed-motiou.

K is an apron or covering, extending all over the part of themachine which is not covered bythe tables E and F. This apron K is raised at centre, to clear the screw H, andis depressed on both sides, to form gutters for collecting the drainage of water and of stone-grinding thrown ofi" by the saw in the process of cutting.

At tbe lowest parts of the apron K are located drainpipes L', which may connect with the sewer P, andthe pipe or pipes L are provided with suitable strainers, sieves, or perforated or porous diaphragme L in order to allow of the passage through them of the water and stone-grinding, and yet retain any small fragments of -mineral carbon, which may become detached, be broken off from, or be thrown off from the saw' X.

It' is an upright apron, which may receive other rnovu able aprons, and is intended to catch any boring, grinding, or fragments of stones, and all the water projected in that direction by the saw X, and bring down and convey the same to the apron K.

From the full and detailed description we have given of our improved stone-cutting machine, its operation will be easily understood.

The stone S being laid upon or fastened to the Jfable F, and this table being adj usted by the screws M M, so as to bring the stone in proper relation to the saw, the saw X being lowered to the desired place for the intended cut, and all the parts being firmly and rigidly fastened, the operator adjusts the feed by the cones It" R, and the speed of the saw by the cones R R', as already explained, andthe saw is putin motion.

Then the saw has reached its speed, and is working steadily, the feed-motion is started by shifting the belt upon the pulley V, and the stone is fed in the direction of the arrow on Plate I, until the cutis finished, when, by shifting the belt upon pulley V', the feed-motion is' stopped, and by shifting it further upon the pulley V", Ithe stone retraces its steps, and may be adjusted for another cut.

Vhat we claim as our invention, and desire to secure by Letters Pat-ent of the United Sta-tes, is-

1. rlhe projecting or overhanging frame (l C, in com bination with the upright frames B B and main frame A, arranged in the manner and for the purpose set forth.

2. The vertical frame D, with its parts g g g g, and

adjustable pillow-blocks, in combination with the projecting frames C C, and saw or milling-tool X, substantially' as described.

3, The combination of the saw or milling-tool X, when provided with the shaft e, pulleysJJand I I, with the tables E and F, and their feediu g-device, com posedv of the screw l-l, nut G, gcariugs T T, shaft Z, and cones R R', substautiall y as and for the purpose set forth.

4. The screens, sieves, strainer-s, or porous diaphragms, L, in combination with the apron K and the saw or millingtool X, for the purpose herein set forth.

v HUGH YOUNG. [L. s] JAMES L. YOUNG. LL. sjj

Witnesses:

J. H. PORTER, ANDREW MAIN. 

